127 строки
3.2 KiB
C#
127 строки
3.2 KiB
C#
//
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// ExpanderBackend.cs
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//
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// Author:
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// Sam Clarke <sam@samclarke.com>
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//
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// Copyright (c) 2013 Sam Clarke
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using SWC = System.Windows.Controls;
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using Xwt.Backends;
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namespace Xwt.WPFBackend
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{
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class ExpanderBackend : WidgetBackend, IExpanderBackend
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{
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public ExpanderBackend()
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{
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Widget = new SWC.Expander();
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Widget.Expanded += delegate {
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System.Windows.Application.Current.Dispatcher.BeginInvoke ((System.Action)delegate ()
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{
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EventSink.OnPreferredSizeChanged ();
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});
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};
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Widget.Collapsed += delegate {
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System.Windows.Application.Current.Dispatcher.BeginInvoke ((System.Action)delegate ()
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{
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EventSink.OnPreferredSizeChanged ();
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});
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};
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}
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protected new SWC.Expander Widget
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{
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get { return (SWC.Expander)base.Widget; }
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set { base.Widget = value; }
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}
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protected new IExpandEventSink EventSink
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{
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get { return (IExpandEventSink)base.EventSink; }
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}
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public string Label
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{
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get {
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return Widget.Header.ToString();
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}
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set {
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Widget.Header = value;
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}
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}
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public bool Expanded
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{
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get {
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return Widget.IsExpanded;
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}
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set {
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Widget.IsExpanded = value;
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}
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}
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public void SetContent(IWidgetBackend child)
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{
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if (child == null)
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Widget.Content = null;
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else
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Widget.Content = child.NativeWidget;
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}
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public override void EnableEvent(object eventId)
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{
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base.EnableEvent(eventId);
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if (eventId is ExpandEvent)
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{
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if ((ExpandEvent)eventId == ExpandEvent.ExpandChanged)
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{
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Widget.Expanded += HandleExpandedChanged;
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Widget.Collapsed += HandleExpandedChanged;
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}
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}
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}
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public override void DisableEvent(object eventId)
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{
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base.DisableEvent(eventId);
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if (eventId is ExpandEvent)
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{
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if ((ExpandEvent)eventId == ExpandEvent.ExpandChanged)
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{
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Widget.Expanded -= HandleExpandedChanged;
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Widget.Collapsed -= HandleExpandedChanged;
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}
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}
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}
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void HandleExpandedChanged(object sender, System.Windows.RoutedEventArgs e)
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{
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Context.InvokeUserCode(delegate
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{
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EventSink.ExpandChanged();
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});
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}
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}
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}
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